Describe the Public Key Accelerator named EIP-28 from Inside-Secure,
part of the SafeXcel family, it is typically included in a bigger
hardware container named EIP-150.

Signed-off-by: Miquel Raynal (Schneider Electric) <miquel.raynal@bootlin.com>
---
 .../crypto/inside-secure,safexcel-eip28.yaml       | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip28.yaml b/Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip28.yaml
new file mode 100644
index 000000000000..96acb257450a
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip28.yaml
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/crypto/inside-secure,safexcel-eip28.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Inside-Secure SafeXcel EIP-28 Public Key Accelerator
+
+maintainers:
+  - Miquel Raynal <miquel.raynal@bootlin.com>
+
+properties:
+  compatible:
+    const: inside-secure,safexcel-eip28
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 3
+
+  clocks:
+    minItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+additionalProperties: false

-- 
2.51.1